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From: Jia He <hejianet@gmail.com>
To: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Cc: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
	"Zhao, Bing" <ilovethull@163.com>,
	Olivier MATZ <olivier.matz@6wind.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"jia.he@hxt-semitech.com" <jia.he@hxt-semitech.com>,
	"jie2.liu@hxt-semitech.com" <jie2.liu@hxt-semitech.com>,
	"bing.zhao@hxt-semitech.com" <bing.zhao@hxt-semitech.com>,
	"Richardson, Bruce" <bruce.richardson@intel.com>
Subject: Re: [dpdk-dev] [PATCH] ring: guarantee ordering of cons/prod loading when doing enqueue/dequeue
Date: Tue, 31 Oct 2017 10:55:15 +0800	[thread overview]
Message-ID: <b54ce545-b75d-9813-209f-4125bd76c7db@gmail.com> (raw)
In-Reply-To: <20171025132642.GA13977@jerin>

Hi Jerin

Do you think  next step whether I need to implement the load_acquire 
half barrier as per freebsd

or find any other performance test case to compare the performance impact?
Thanks for any suggestions.

Cheers,
Jia

On 10/25/2017 9:26 PM, Jerin Jacob Wrote:
> -----Original Message-----
>> Date: Tue, 24 Oct 2017 10:04:26 +0800
>> From: Jia He <hejianet@gmail.com>
>> To: Jerin Jacob <jerin.jacob@caviumnetworks.com>
>> Cc: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>, "Zhao, Bing"
>>   <ilovethull@163.com>, Olivier MATZ <olivier.matz@6wind.com>,
>>   "dev@dpdk.org" <dev@dpdk.org>, "jia.he@hxt-semitech.com"
>>   <jia.he@hxt-semitech.com>, "jie2.liu@hxt-semitech.com"
>>   <jie2.liu@hxt-semitech.com>, "bing.zhao@hxt-semitech.com"
>>   <bing.zhao@hxt-semitech.com>, "Richardson, Bruce"
>>   <bruce.richardson@intel.com>
>> Subject: Re: [dpdk-dev] [PATCH] ring: guarantee ordering of cons/prod
>>   loading when doing enqueue/dequeue
>> User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101
>>   Thunderbird/52.4.0
>>
>> Hi Jerin
> Hi Jia,
>
>
>>> example:
>>> ./build/app/test -c 0xff -n 4
>>>>> ring_perf_autotest
>> Seem in our arm64 server, the ring_perf_autotest will be finished in a few
>> seconds:
> Yes. It just need a few seconds.
>
>> Anything wrong about configuration or environment setup?
> By default, arm64+dpdk will be using el0 counter to measure the cycles. I
> think, in your SoC, it will be running at 50MHz or 100MHz.So, You can
> follow the below scheme to get accurate cycle measurement scheme:
>
> See: http://dpdk.org/doc/guides/prog_guide/profile_app.html
> check: 44.2.2. High-resolution cycle counter
>
>> root@ubuntu:/home/hj/dpdk/build/build/test/test# ./test -c 0xff -n 4
>> EAL: Detected 44 lcore(s)
>> EAL: Probing VFIO support...
>> APP: HPET is not enabled, using TSC as default timer
>> RTE>>per_lcore_autotest
>> RTE>>ring_perf_autotest
>> ### Testing single element and burst enq/deq ###
>> SP/SC single enq/dequeue: 0
>> MP/MC single enq/dequeue: 2
>> SP/SC burst enq/dequeue (size: 8): 0
> If you follow the above link, The value '0' will be replaced with more meaning full data.
>
>> MP/MC burst enq/dequeue (size: 8): 0
>> SP/SC burst enq/dequeue (size: 32): 0
>> MP/MC burst enq/dequeue (size: 32): 0
>>
>> ### Testing empty dequeue ###
>> SC empty dequeue: 0.02
>> MC empty dequeue: 0.04
>>
>> ### Testing using a single lcore ###
>> SP/SC bulk enq/dequeue (size: 8): 0.12
>> MP/MC bulk enq/dequeue (size: 8): 0.31
>> SP/SC bulk enq/dequeue (size: 32): 0.05
>> MP/MC bulk enq/dequeue (size: 32): 0.09
>>
>> ### Testing using two hyperthreads ###
>> SP/SC bulk enq/dequeue (size: 8): 0.12
>> MP/MC bulk enq/dequeue (size: 8): 0.39
>> SP/SC bulk enq/dequeue (size: 32): 0.04
>> MP/MC bulk enq/dequeue (size: 32): 0.12
>>
>> ### Testing using two physical cores ###
>> SP/SC bulk enq/dequeue (size: 8): 0.37
>> MP/MC bulk enq/dequeue (size: 8): 0.92
>> SP/SC bulk enq/dequeue (size: 32): 0.12
>> MP/MC bulk enq/dequeue (size: 32): 0.26
>> Test OK
>> RTE>>
>>
>> Cheers,
>> Jia
>>> By default, arm64+dpdk will be using el0 counter to measure the cycles. I
>>> think, in your SoC, it will be running at 50MHz or 100MHz.So, You can
>>> follow the below scheme to get accurate cycle measurement scheme:
>>>
>>> See: http://dpdk.org/doc/guides/prog_guide/profile_app.html
>>> check: 44.2.2. High-resolution cycle counter

-- 
Cheers,
Jia

  parent reply	other threads:[~2017-10-31  2:55 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-10  9:56 Jia He
2017-10-12 15:53 ` Olivier MATZ
2017-10-12 16:15   ` Stephen Hemminger
2017-10-12 17:05   ` Ananyev, Konstantin
2017-10-12 17:23     ` Jerin Jacob
2017-10-13  1:02       ` Jia He
2017-10-13  1:15         ` Jia He
2017-10-13  1:16         ` Jia He
2017-10-13  1:49           ` Jerin Jacob
2017-10-13  3:23             ` Jia He
2017-10-13  5:57               ` Zhao, Bing
2017-10-13  7:33             ` Jianbo Liu
2017-10-13  8:20               ` Jia He
2017-10-19 10:02           ` Ananyev, Konstantin
2017-10-19 11:18             ` Zhao, Bing
2017-10-19 14:15               ` Ananyev, Konstantin
2017-10-19 20:02                 ` Ananyev, Konstantin
2017-10-20  1:57                   ` Jia He
2017-10-20  5:43                     ` Jerin Jacob
2017-10-23  8:49                       ` Jia He
2017-10-23  9:05                         ` Kuusisaari, Juhamatti
2017-10-23  9:10                           ` Bruce Richardson
2017-10-23 10:06                         ` Jerin Jacob
2017-10-24  2:04                           ` Jia He
2017-10-25 13:26                             ` Jerin Jacob
2017-10-26  2:27                               ` Jia He
2017-10-31  2:55                               ` Jia He [this message]
2017-10-31 11:14                                 ` Jerin Jacob
2017-11-01  2:53                                   ` Jia He
2017-11-01 19:04                                     ` Jerin Jacob
2017-11-02  1:09                                       ` Jia He
2017-11-02  8:57                                       ` Jia He
2017-11-03  2:55                                         ` Jia He
2017-11-03 12:47                                           ` Jerin Jacob
2017-11-01  4:48                                   ` Jia He
2017-11-01 19:10                                     ` Jerin Jacob
2017-10-20  7:03                     ` Ananyev, Konstantin
2017-10-13  0:24     ` Liu, Jie2
2017-10-13  2:12       ` Zhao, Bing
2017-10-13  2:34         ` Jerin Jacob
2017-10-16 10:51       ` Kuusisaari, Juhamatti

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